以WebServices方式上传图片

主要代码：

    public string FileUploadImage(string ImagefileName, byte[] byteFileStream)
    {
        string mess = "";
        try
        {
            string filePath = HttpContext.Current.Server.MapPath("UploadFile/" + ImagefileName);
            FileStream fs = new FileStream(filePath, FileMode.OpenOrCreate, FileAccess.Write);
            BinaryWriter w = new BinaryWriter(fs);
            w.Write(byteFileStream);
            w.Flush();
            fs.Close();
        }
        catch (Exception eX)
        {
            mess = eX.Message;
        }

        if (mess != "")
        {
            return mess;
        }
        else
        {
            return "从服务器返回的消息:恭喜！文件   " + ImagefileName + "已成功上传！   返回时间为" + System.DateTime.Now.ToLongTimeString();
        }
    }